Home / 12,879.54-19,315.14-4,112.38

Finding the Fourth Proportional to 12,879.54, 19,315.14 and 4,112.38

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Solution

The fourth proportional to 12,879.54, 19,315.14 and 4,112.38 is: 6,167.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,879.54 : 19,315.14 = 4,112.38 : x
  2. Step 2: Convert to fraction form
    12,879.54/19,315.14 = 4,112.38/x
  3. Step 3: Cross multiply
    12,879.54x = 19,315.14 × 4,112.38
  4. Step 4: Simplify right side
    12,879.54x = 79,431,195.43
  5. Step 5: Solve for x
    x = 79,431,195.43/12,879.54
  6. Step 6: Final answer
    x = 6,167.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.